CN101614645A - A kind of method of measuring accumulation of external insulation pollution of electric transmission and transformation equipment - Google Patents
A kind of method of measuring accumulation of external insulation pollution of electric transmission and transformation equipment Download PDFInfo
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- CN101614645A CN101614645A CN200810028950A CN200810028950A CN101614645A CN 101614645 A CN101614645 A CN 101614645A CN 200810028950 A CN200810028950 A CN 200810028950A CN 200810028950 A CN200810028950 A CN 200810028950A CN 101614645 A CN101614645 A CN 101614645A
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- insulator
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- electric transmission
- transformation equipment
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Abstract
The present invention relates to a kind of method of measuring accumulation of external insulation pollution of electric transmission and transformation equipment, measure the place in each that choose, in earlier stage hang a string insulator chain rainy season, when estimating dry season and beginning, gather and measure first insulator contamination thing content, the sampling interval of an arid weather of experience is gathered and is measured second insulator contamination thing content, can calculate contamination speed and contamination variable condition, provide computational data for obtaining the maximum contamination state that certain regional n one meets dry season.
Description
Affiliated technical field
The present invention relates to the measuring method of power transmission and transformation technical field, be specifically related to a kind of method of measuring accumulation of external insulation pollution of electric transmission and transformation equipment.
Background technology
Dunghill is the most important condition that causes external insulation intensity to reduce, and the accumulation filth is the principal element that causes pollution flashover.Prevent and treat pollution flashover, will have a yardstick to remove to weigh filthy degree, external insulation equipment producer, power transmission and transforming equipment designing unit, run unit just have with reference to foundation.It is very complicated that power transmission and transformation equipment outer insulation is accumulated filthy chemical constitution, and being used for parameter that equivalence characterizes filthy degree has salt close and grey close etc.Gradation for surface pollution has very big difference in different areas, at different time very big variation is arranged again.How to determine that the filthy degree that certain equipment outer insulation will bear is a basic problem of anti-fouling system.Because mensuration is different with the method for weighing filthy degree, has formed different theoretical school and technical standard.
China uses the close measurement means of salt since the nineties in last century in whole electric system and divides dirty district, and draws dirty district figure.The dirt district figure in early stage mostly is dirty grade of close or close divisions of average for many years annual maximum salt with 1 year crude salt.Fact proved that the dirty level of being divided is difficult to reflect actual dirt level.The creep distance of design alternative insulator can't fully satisfy the requirement of Operation of Electric Systems under the guidance of such dirt district figure, needs to rely on large-scale hand sweeping to assist anti-pollution flashover, and the equipment operation maintenance workload is big, does not have quality assurance again.
In the world, existing popular operative norm has IEC60815:2002, and filthy degree is the maximal value of ESDD/NSDD or SES measured value, and Measuring Time is defined as 1 year or for many years, and emphasizes and will determine filthy degree in conjunction with operating experience.Carry out the less in recent years occurrence of large-area pollution flashover of some developed countries of IEC60815 standard, many experiences and relevant criterion are worthy of our study, but because these national atmosphere filthy environments are more stable, through the long term experience accumulation, standards such as employing IEC60815 can obtain more dirty level evaluation.Owing to China filthy variation soon in many areas, amplitude is big, indiscriminately imitates this international standard fully and can not obtain the evaluation of dirt level accurately as early as possible by let us, is unfavorable for that in time the arrangement accent is climbed.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art, a kind of method of measuring accumulation of external insulation pollution of electric transmission and transformation equipment is provided, realize: 1, measure certain regional contamination speed fast; 2, obtain the contamination variable condition in certain regional dry season; 3, provide computational data for obtaining the maximum contamination state that certain regional n one meets dry season.
The object of the present invention is achieved like this: a kind of method of measuring accumulation of external insulation pollution of electric transmission and transformation equipment comprises following order step:
(1) distributes according to the power transmission and transforming equipment geographic area, choose one at least and measure the place;
(2) measure the place in each that choose, hang a string insulator chain of forming by four suspended insulators at least in rainy season in measurement year in earlier stage;
(3) measuring when year estimating dry season and beginning, gather the first insulator contamination thing content W that measures after insulator chain is removed top and each a slice insulator of bottom
1
(4) experience one at least 10 days be the sampling interval t of arid weather
1, gather the second insulator contamination thing content W that measures after insulator chain is removed top and each a slice insulator of bottom
2
(5) calculate this measurement place contamination speed w=(W
2-W
1)/t
1
(6) calculate this measurement place after gathering first insulator contamination thing during experience t gas dry days the Heavenly Stems, insulator contamination thing content W=W
1+ wt.
Above-mentioned insulator chain hangs on the electric power line pole tower.
Above-mentioned dunghill content comprises close content of salt and grey close content, or wherein a kind of.
Above-mentioned sampling interval t
1When rainfall occurring during this time, wait for rainfall finish after again since the step of (3) step.
Above-mentioned sampling interval determines that method comprises according to the Local Weather Report result, after experiencing 10 days at least, gathers the step of measurement before the rainfall.
Above-mentioned sampling interval determines that method is included in and carries out second when rainfall occurring before gather measuring, wait for rainfall finish after again since the step of (3) step.
Be located at when gathering first insulator contamination thing, arid weather has continued t
0My god, it is t that this measurement place meteorological statistics n one meets arid fate
n, then n one meets insulator contamination thing maximum level W
Max=W
1+ w (t
n-t
0).
The present invention compared with prior art has following advantage: 1, can measure contamination speed, carry out filthy real-time status prediction; 2, Measuring Time is short, can accurately measure insulator contamination thing accumulation situation in 1 year, need not measure for many years and average; 3, can obtain the insulator contamination thing maximum level that certain regional n one meets dry season.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 represents operational flowchart of the present invention.
Embodiment
Fig. 1 represents operational flowchart of the present invention, in the present embodiment, and step 101: distribute according to the power transmission and transforming equipment geographic area, choose at least and measure the place.Step 102: measure the place in each that choose, hang a string insulator chain of forming by four suspended insulators at least in earlier stage, generally can consider to hang 6 in rainy season in measurement year.The general choice criteria model of suspended insulator insulator is as the XP-7 insulator.Step 103:, estimate the start time in dry season according to Local Weather Report.Step 104: gather the first insulator contamination thing content W that measures after insulator chain is removed top and each a slice insulator of bottom
1Insulator contamination generally by artificial with sampling cloth collection, can measure that salt is close, ash is close, perhaps one of them.Step 105: experience one at least 10 days be the sampling interval t of arid weather
1, whether record rainfall occurs.If rainfall then goes to step 103,, then go to step 106 if rainfall do not occur.Can determine sampling interval t according to local climate feature and contamination situation
1, generally be advisable with 15～20 days.Step 106: gather the second insulator contamination thing content W that measures after insulator chain is removed top and each a slice insulator of bottom
2Step 107: calculate this measurement place contamination speed w=(W
2-W
1)/t
1Step 108: calculate this measurement place after gathering first insulator contamination thing during experience t gas dry days the Heavenly Stems, insulator contamination thing content W=W
1+ wt; According to this formula, can calculate the contamination situation of insulator.Be located at when gathering first insulator contamination thing, arid weather has continued t
0My god, it is t that this measurement place meteorological statistics n one meets arid fate
n, then n one meets insulator contamination thing maximum level W
Max=W
1+ w (t
n-t
0).
Claims (6)
1, a kind of method of measuring accumulation of external insulation pollution of electric transmission and transformation equipment is characterized in that comprising following order step:
(1) distributes according to the power transmission and transforming equipment geographic area, choose one at least and measure the place;
(2) measure the place in each that choose, hang a string insulator chain of forming by four suspended insulators at least in rainy season in measurement year in earlier stage;
(3) measuring when year estimating dry season and beginning, gather the first insulator contamination thing content W that measures after insulator chain is removed top and each a slice insulator of bottom
1
(4) experience one at least 10 days be the sampling interval t of arid weather
1, gather the second insulator contamination thing content W that measures after insulator chain is removed top and each a slice insulator of bottom
2
(5) calculate this measurement place contamination speed w=(W
2-W
1)/t
1
(6) calculate this measurement place after gathering first insulator contamination thing during experience t gas dry days the Heavenly Stems, insulator contamination thing content W=W
1+ wt.
2, a kind of method of measuring accumulation of external insulation pollution of electric transmission and transformation equipment according to claim 1 is characterized in that described insulator chain hangs on the electric power line pole tower.
3, a kind of method of measuring accumulation of external insulation pollution of electric transmission and transformation equipment according to claim 1 is characterized in that described dunghill content, comprises close content of salt and grey close content, or wherein a kind of.
4, a kind of method of measuring accumulation of external insulation pollution of electric transmission and transformation equipment according to claim 1 is characterized in that described sampling interval t
1When rainfall occurring during this time, wait for rainfall finish after again since the step of (3) step.
5, a kind of method of measuring accumulation of external insulation pollution of electric transmission and transformation equipment according to claim 1, it is characterized in that described sampling interval determines that method comprises according to the Local Weather Report result, after experiencing 10 days at least, gather the step of measurement before the rainfall.
6, according to claim 1,5 described a kind of methods of measuring accumulation of external insulation pollution of electric transmission and transformation equipment, it is characterized in that described sampling interval determines that method is included in and carry out second when rainfall occurring before gather measuring, wait for rainfall finish after again since the step of (3) step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810028950A CN101614645A (en) | 2008-06-23 | 2008-06-23 | A kind of method of measuring accumulation of external insulation pollution of electric transmission and transformation equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810028950A CN101614645A (en) | 2008-06-23 | 2008-06-23 | A kind of method of measuring accumulation of external insulation pollution of electric transmission and transformation equipment |
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| Publication Number | Publication Date |
|---|---|
| CN101614645A true CN101614645A (en) | 2009-12-30 |
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ID=41494410
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|---|---|---|---|
| CN200810028950A Pending CN101614645A (en) | 2008-06-23 | 2008-06-23 | A kind of method of measuring accumulation of external insulation pollution of electric transmission and transformation equipment |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949807A (en) * | 2010-09-09 | 2011-01-19 | 华南理工大学 | External insulation natural dirt accumulation testing method for high-voltage power transmission line |
| CN102520119A (en) * | 2011-11-10 | 2012-06-27 | 广东电网公司东莞供电局 | Method for measuring filthy degree on surface of electric outer insulation sheath |
| CN103245761A (en) * | 2013-04-28 | 2013-08-14 | 华南理工大学 | Method for grading polluted areas through pollution rates |
| CN103411862A (en) * | 2013-07-15 | 2013-11-27 | 国家电网公司 | Natural accumulated dirt checking field of insulator |
| CN105973788A (en) * | 2016-04-25 | 2016-09-28 | 南方电网科学研究院有限责任公司 | Measuring method for corrosion resistance rate of atmospheric corrosion hanging piece |
| CN108009130A (en) * | 2017-11-30 | 2018-05-08 | 国家电网公司 | Insulator contamination Forecasting Methodology in natural environment based on regression analysis |
| CN110610254A (en) * | 2019-07-29 | 2019-12-24 | 中国南方电网有限责任公司超高压输电公司广州局 | Multi-dimensional monitoring system and prediction evaluation method for pollution degree of equipment surface |
| CN112147030A (en) * | 2020-09-26 | 2020-12-29 | 国网山东省电力公司电力科学研究院 | Device and method for detecting dirt deposition amount of external insulation part |
| CN112179800A (en) * | 2020-09-26 | 2021-01-05 | 国网山东省电力公司电力科学研究院 | Power transmission and transformation equipment dirt micro-quality measuring device and method |
-
2008
- 2008-06-23 CN CN200810028950A patent/CN101614645A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949807B (en) * | 2010-09-09 | 2011-12-28 | 华南理工大学 | External insulation natural dirt accumulation testing method for high-voltage power transmission line |
| CN101949807A (en) * | 2010-09-09 | 2011-01-19 | 华南理工大学 | External insulation natural dirt accumulation testing method for high-voltage power transmission line |
| CN102520119A (en) * | 2011-11-10 | 2012-06-27 | 广东电网公司东莞供电局 | Method for measuring filthy degree on surface of electric outer insulation sheath |
| CN103245761B (en) * | 2013-04-28 | 2015-08-26 | 华南理工大学 | A kind of method dividing dirty district grade with contamination speed |
| CN103245761A (en) * | 2013-04-28 | 2013-08-14 | 华南理工大学 | Method for grading polluted areas through pollution rates |
| CN103411862B (en) * | 2013-07-15 | 2016-08-31 | 国家电网公司 | Insulator Natural contamination examination field |
| CN103411862A (en) * | 2013-07-15 | 2013-11-27 | 国家电网公司 | Natural accumulated dirt checking field of insulator |
| CN105973788A (en) * | 2016-04-25 | 2016-09-28 | 南方电网科学研究院有限责任公司 | Measuring method for corrosion resistance rate of atmospheric corrosion hanging piece |
| CN108009130A (en) * | 2017-11-30 | 2018-05-08 | 国家电网公司 | Insulator contamination Forecasting Methodology in natural environment based on regression analysis |
| CN108009130B (en) * | 2017-11-30 | 2022-03-22 | 国家电网公司 | Regression analysis-based insulator pollution accumulation prediction method in natural environment |
| CN110610254A (en) * | 2019-07-29 | 2019-12-24 | 中国南方电网有限责任公司超高压输电公司广州局 | Multi-dimensional monitoring system and prediction evaluation method for pollution degree of equipment surface |
| CN110610254B (en) * | 2019-07-29 | 2021-02-02 | 中国南方电网有限责任公司超高压输电公司广州局 | Multi-dimensional monitoring system and prediction evaluation method for pollution degree of equipment surface |
| CN112147030A (en) * | 2020-09-26 | 2020-12-29 | 国网山东省电力公司电力科学研究院 | Device and method for detecting dirt deposition amount of external insulation part |
| CN112179800A (en) * | 2020-09-26 | 2021-01-05 | 国网山东省电力公司电力科学研究院 | Power transmission and transformation equipment dirt micro-quality measuring device and method |
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Application publication date: 20091230 |